ECON 3210 3.0 Section A  Fall 2011
Assignment 2
(Due Date: October 17, 2011)
Question 1:
A family counselor believes that there is a relationship between number of
years married and blood pressure.
In particular, she believes she can predict the client’s
systolic blood pressure (SBP) based on the number of years married (NYM). The data are
given in the following table.
NYM
4.9
10.3
11.9
13.0
13.0
3.4
3.1
12.0
12.9
7.1
SBP
133
157
129
141
166
94
114
144
147
124
a.
Obtain a scatterplot and describe the relationship you observe from the scatterplot.
b.
Regardless of what you observe in part (a), the counselor decided to use a simple linear
regression model to analyse the data set. State clearly the model that she’s using for
her analyse.
c.
Based on the data, obtain the least squares regression line?
d.
Interpret the estimated coefficients obtained in part (c) in the context of this question.
e.
What is the predicted systolic blood pressure when the client has married for 25 years?
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 Spring '11
 A
 Linear Regression, Regression Analysis, mouth volume

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